Effect of ultraviolet-B radiation on arbuscular mycorrhizal colonization of two rangeland weeds

Agnieszka Synowiec , Hamid Madani

Abstract

Our experiment aimed at assessing the influence of ultraviolet-B (UV-B) radiation on the growth and colonization of roots of two invasive rangeland species: houndstongue (Cynoglossum officinale L.) and downy brome (Bromus tectorum L.) with arbuscular mycorrhizal fungi (AMF). As a result, after 13 weeks of growth in the presence of 8 kJ*m-2 UV-B radiation (estimated as 23% of ozone layer depletion), a significant reduction of houndstongue’s lamina length, leaf area, shoot and root dry mass was noted. As for downy brome, only the stem length and shoot dry mass were negatively affected. Nevertheless, the intensity of UV-B radiation downy brome developed a similar number of inflorescence. For both species in the presence of elevated UV-BBE radiation, a significant reduction in the AMF colonization was noted, especially for hyphae and arbuscules. In conclusion, the elevated UV-B radiation may affect the performance of both weeds and relate with their competition abilities.
Author Agnieszka Synowiec (FoAE / DoAaAE)
Agnieszka Synowiec,,
- Department of Agrotechnology and Agricultural Ecology
, Hamid Madani
Hamid Madani,,
-
Journal seriesAfrican Journal of Microbiology Research, ISSN 1996-0808, (0 pkt)
Issue year2013
Vol7
No48
Pages5484-5488
Publication size in sheets0.5
Keywords in EnglishArbuscule, downy brome, growth, houndstongue, hyphae
ASJC Classification2725 Infectious Diseases; 1110 Plant Science; 2404 Microbiology
DOIDOI:10.5897/AJMR2013.6364
URL http://www.academicjournals.org/article/article1385398307_Stok%C5%82osa%20and%20Madani.pdf
Internal identifierWRE/2013/13
Languageen angielski
Score (nominal)0
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.132; WoS Impact Factor: 2011 = 0.539 (2) - 2011=0.564 (5)
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